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Finding the Fourth Proportional to 61,911, 85,434.88 and 33,616.08

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Solution

The fourth proportional to 61,911, 85,434.88 and 33,616.08 is: 46,388.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,911 : 85,434.88 = 33,616.08 : x
  2. Step 2: Convert to fraction form
    61,911/85,434.88 = 33,616.08/x
  3. Step 3: Cross multiply
    61,911x = 85,434.88 × 33,616.08
  4. Step 4: Simplify right side
    61,911x = 2,871,985,760.87
  5. Step 5: Solve for x
    x = 2,871,985,760.87/61,911
  6. Step 6: Final answer
    x = 46,388.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.